Hydraulic and earth engineering – Foundation – Columnar structure
Patent
1986-10-14
1987-11-24
Stodola, Nancy J.
Hydraulic and earth engineering
Foundation
Columnar structure
405245, 405253, 405256, E02D 510, E02D 514, E02D 530, E02D 730
Patent
active
047085304
ABSTRACT:
A concrete foundation pile and a device for driving the pile into the ground. The pile is provided with an outer surface having a screw thread element extending over a considerable part thereof, and a cavity extending from an opposite end of the pile forming an internal engaging surface extending over the part of the pile over which the screw thread element extends. A rotational driving force is transferred over said internal engaging surface substantially along the full length over which the screw thread element extends.
REFERENCES:
patent: 795660 (1905-07-01), Stanford
patent: 1570404 (1926-01-01), Rotinoff
patent: 1898397 (1933-02-01), Rotinoff
patent: 2342243 (1944-02-01), Brizay
patent: 3248888 (1966-05-01), Williams
patent: 3261412 (1966-07-01), Lob
patent: 4132082 (1979-01-01), Merjan
patent: 4239419 (1980-12-01), Gillen
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